Hamilton, who survived a shark attack in which her left arm was bitten off, was the subject of Soul Surfer, a 2011 film starringAnnaSophia Robb. Hamilton acted as a stunt double for many of the surfing scenes in the film.

The sequel's story centers on the real-life baby dolphin Hope, who was saved and rehabilitated by the Clearwater Marine Aquarium. The pic is currently filming in Clearwater, Fla. Warner Bros. has slated it for a Sept. 19, 2014 release.

Hamilton, 23, will appear as herself in the film.

Hamilton, who was 13 years old when she was attacked by a tiger shark in Kauai, has appeared as herself on several TV shows, including 19 Kids and Counting. She's repped by Wasserman Media Group.